﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SQLEditor.admin.service
{
    public class ConvertUtil
    {
        public static string getReaderCode(uint n)
        {
            return string.Format("{0:0000000000}", n);
        }
        public static string genBarcode()
        {
            return "";
        }
        public static bool isValidDate(DateTime? dt)
        {
            return dt > DateTime.MinValue && dt < DateTime.MaxValue;
        }
        public static DateTime toDateTime(object o)
        {
            try
            {
                return Convert.ToDateTime(o);
            }
            catch
            {
                return DateTime.Now;
            }
        }

        public static DateTime toDateYear(object o)
        {
            try
            {
                return Convert.ToDateTime(o);

            }
            catch
            {
                try
                {
                    return new DateTime(Convert.ToInt32(o), 1, 1);
                }
                catch
                {
                    return DateTime.Now;
                }

            }
        }

        public static DateTime? toDateTimeOrNull(object o)
        {
            try
            {
                return Convert.ToDateTime(o);
            }
            catch
            {
                return null;
            }
        }
        public static string toString(object o)
        {
            try
            {
                return Convert.ToString(o);
            }
            catch
            {
                return "";
            }
        }
        public static int toInt32(object o)
        {
            try
            {
                return Convert.ToInt32(o);
            }
            catch
            {
                return 0;
            }
        }
        public static uint toUInt32(object o)
        {
            try
            {
                return Convert.ToUInt32(o);
            }
            catch
            {
                return 0;
            }
        }

        public static long toLong(object o)
        {
            try
            {
                return Convert.ToInt64(o);
            }
            catch
            {
                return 0;
            }
        }

        public static decimal toDecimal(object o)
        {
            try
            {
                return Convert.ToDecimal(o);
            }
            catch
            {
                return 0;
            }
        }

        public static string GetTimeStamp()
        {
            TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
            return Convert.ToInt64(ts.TotalSeconds).ToString();
        }

        public static DateTime StampToDateTime(string timeStamp)
        {
            DateTime dateTimeStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
            long lTime = long.Parse(timeStamp + "0000000");
            TimeSpan toNow = new TimeSpan(lTime);

            return dateTimeStart.Add(toNow);
        }
        /// <summary>

        /// 在指定的字符串列表CnStr中检索符合拼音索引字符串

        /// </summary>

        /// <param name="CnStr">汉字字符串</param>

        /// <returns>相对应的汉语拼音首字母串</returns>

        public static string GetSpellCode(string CnStr)
        {

            string strTemp = "";
            int iLen = CnStr.Length;
            int i = 0;
            for (i = 0; i <= iLen - 1; i++)
            {
                strTemp += GetCharSpellCode(CnStr.Substring(i, 1));
            }
            return strTemp.ToLower();

        }

        /// <summary>
        /// 得到一个汉字的拼音第一个字母，如果是一个英文字母则直接返回大写字母
        /// </summary>
        /// <param name="CnChar">单个汉字</param>
        /// <returns>单个大写字母</returns>

        private static string GetCharSpellCode(string CnChar)
        {
            long iCnChar;
            byte[] ZW = System.Text.Encoding.Default.GetBytes(CnChar);

            //如果是字母，则直接返回
            if (ZW.Length == 1)
            {
                return CnChar.ToUpper();
            }
            else
            {
                // get the array of byte from the single char
                int i1 = (short)(ZW[0]);
                int i2 = (short)(ZW[1]);
                iCnChar = i1 * 256 + i2;
            }
            // iCnChar match the constant
            if ((iCnChar >= 45217) && (iCnChar <= 45252))
            {
                return "A";
            }
            else if ((iCnChar >= 45253) && (iCnChar <= 45760))
            {
                return "B";
            }
            else if ((iCnChar >= 45761) && (iCnChar <= 46317))
            {
                return "C";
            }
            else if ((iCnChar >= 46318) && (iCnChar <= 46825))
            {
                return "D";
            }
            else if ((iCnChar >= 46826) && (iCnChar <= 47009))
            {
                return "E";
            }
            else if ((iCnChar >= 47010) && (iCnChar <= 47296))
            {
                return "F";
            }
            else if ((iCnChar >= 47297) && (iCnChar <= 47613))
            {
                return "G";
            }
            else if ((iCnChar >= 47614) && (iCnChar <= 48118))
            {
                return "H";
            }
            else if ((iCnChar >= 48119) && (iCnChar <= 49061))
            {
                return "J";
            }
            else if ((iCnChar >= 49062) && (iCnChar <= 49323))
            {
                return "K";
            }
            else if ((iCnChar >= 49324) && (iCnChar <= 49895))
            {
                return "L";
            }
            else if ((iCnChar >= 49896) && (iCnChar <= 50370))
            {
                return "M";
            }
            else if ((iCnChar >= 50371) && (iCnChar <= 50613))
            {
                return "N";
            }
            else if ((iCnChar >= 50614) && (iCnChar <= 50621))
            {
                return "O";
            }
            else if ((iCnChar >= 50622) && (iCnChar <= 50905))
            {
                return "P";
            }
            else if ((iCnChar >= 50906) && (iCnChar <= 51386))
            {
                return "Q";
            }
            else if ((iCnChar >= 51387) && (iCnChar <= 51445))
            {
                return "R";
            }
            else if ((iCnChar >= 51446) && (iCnChar <= 52217))
            {
                return "S";
            }
            else if ((iCnChar >= 52218) && (iCnChar <= 52697))
            {
                return "T";
            }
            else if ((iCnChar >= 52698) && (iCnChar <= 52979))
            {
                return "W";
            }
            else if ((iCnChar >= 52980) && (iCnChar <= 53640))
            {
                return "X";
            }
            else if ((iCnChar >= 53689) && (iCnChar <= 54480))
            {
                return "Y";
            }
            else if ((iCnChar >= 54481) && (iCnChar <= 55289))
            {
                return "Z";
            }
            else
                return ("?");
        }
    }
}
